Math+3-8

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Get into your groups of 4. Each person needs a whiteboard and a marker!!!

Standard form:

8, 5 6 2

Expanded form:

We stretch it out with addition...
8,000 + 500  + 60  +  2

Word form:

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">You write it like you say it!

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">eight thousand, <span style="background-color: transparent; color: #ff0000; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">five hundred <span style="background-color: transparent; color: #0000ff; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;"> sixty <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">- <span style="background-color: transparent; color: #00ff00; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">two

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">Place value form:

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">You write it out like you are taking a look at each individual place value.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">8 thousands <span style="background-color: transparent; color: #ff0000; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;"> 5 hundreds <span style="background-color: transparent; color: #0000ff; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;">6 tens <span style="background-color: transparent; color: #00ff00; font-family: Arial; font-size: 29px; text-decoration: none; vertical-align: baseline;"> 2 ones

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">Now...decide on a number. Each person in your group is responsible for writing it a different way. You will share this with the class. Remember the name of the form that you wrote it in!!!

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">As we move back to our desks...think about this...

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">Rounding

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">Why do we do this?

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">????????????????? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">Are you still thinking? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">????????????????? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">? <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">?

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">To make numbers easier to use mentally.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">6,000 + 5,000 is <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; vertical-align: baseline;">__a lot__ <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;"> easier to do in your head than 6,192 + 4,923!!!

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">Unless you're a robot.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">To round to the nearest tens...

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">You take a look at the number to the right of the tens place (the ones).

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">If the number is 4 or smaller, you leave the number in the tens place and put a 0 in the ones place.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; text-decoration: none; vertical-align: baseline;">6 <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; vertical-align: baseline;">__2__ <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; text-decoration: none; vertical-align: baseline;"> --> <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; vertical-align: baseline;">__60__

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 20px; text-decoration: none; vertical-align: baseline;">If the number is 5 or greater, you round up to the next number in the tens place and put a 0 in the ones place.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; text-decoration: none; vertical-align: baseline;">6 <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; vertical-align: baseline;">__7__ <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; text-decoration: none; vertical-align: baseline;"> --> <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 32px; vertical-align: baseline;">__70__

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 31px; text-decoration: none; vertical-align: baseline;">Easy! Can you do it? Try it on p.146 with problems 32 - 37.

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 31px; text-decoration: none; vertical-align: baseline;">Could you do this with rounding to the nearest hundred? Yep! Try it! Thousands? Of course!

<span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 31px; text-decoration: none; vertical-align: baseline;">HW tonight is WS 99 & 100

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